Corner-protector anchor.



J. G. BRAUN.

CORNER PROTECTOR ANCHOR. APPLICATION mm 1m 1915.

1,208,736; Patentd Dec. 19,1916.

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J. G. BBAUN. comma PROTECTOR ANCHOR. APPLICATION FILED JAN. 9, l9l5- I 1,208,736. v Patented Dec. 19,1916.

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JACOB BRAUN, OF CHICAGO, ILLINOIS.

CORNER-PROTECTOR ANCHOR.

Specification of Letters Patent.

Patented Dec. is, rare.

Application filed January 9, 1915. Serial No. 1,321.

To all whom it may concern:

Be it known that I, JAcoB G. BRAUN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Corner-Protector Anchors, of which the following is a specification.

This invention relates to an anchored metal construction for protecting the edges or corners of plastic material from injury, and is more particularly described as a stair tread for the protection of the edge of a step constructed of concrete or other plastic material.

The principal object of the present invention is to provide an improved construction consisting of a metal protecting strip adapted to be placed along or in the edge of a step and to provide anchoring means for securing such a strip or molding to the edge or corner of a step, and for holding it firmly and rigidly in place.

Other objects will appear hereinafter.

In the drawings, Figure 1 is a sectional view of a releasable form of anchor which may be easily inserted in the molding; Fig. 2 is a top view of the anchor and molding of Fig. 1; Fig. 3 is a side elevation of a different form of anchor applied to a stair tread; Fig. l is a different view of the anchor of Fig. 3; Fig. 5 is a view of the preferred form of anchor, and Fig. 6 is a top View of the anchor of Fig.5 applied only to a stair tread.

By securing a metal strip or protector in the corner of a wall in the edge of a step, or in any other angular projection subject 'to wear, not only is the edge protected but also the wear on the step is reduced to a minimum. In metal constructions it is the usual practice to support a metal strip by fastening it to other metal, but in the case of a step Or other angular projection, consisting of concrete or similar plastic material, there frequently is no metal construction to which such a protecting strip or tread may be secured. For this reason it is necessary to provide a suitable anchor for assisting in holdingthe tread in position and for preventing it from being disengaged or loosened from the material in which it is placed or which it is to protect.

In the present invention astrip or molding 4 is preferably formed with a grooved tread 5 on its upper faces usually placed flush with the upper surface of a step 6 to which the molding is applied, the grooves being provided for assisting in maintaining a foot-hold on the step. The inside of the molding is formed. with a groove 7 wider at the bottom than at the sides and usually referred to as a dovetail groove. The plastic material of which the step is constructed enters the groove at the time the molding is placed in position so that the plastic material within the groove is an integral part of the step structure and materially assists in holding the molding in place. tending from the dovetail part of the molding is a depending portion 8 which preferably abuts the upright face of the step, but if desired may be embedded in the step so that the outer face of the depending portion or the outer face of the dovetail portion is flush with the upright face of the step.

The anchor may consist of a single strip 13 (see Figs. 1 and 2) formed with an end 14 adapted to be freely inserted in the dove tail groove 7 of the molding t with the edge cooperating with one side of the dovetail groove. A bar 15 is pivoted to the strip 13 adjacent the end 14 and has an extremity 16 which cooperates with the other side of the groove when the bar 15 is moved from the dotted position shown in Fig. 1 to the full line position. Of course it is understood that this anchor is placed in position before the plastic material 6 is in place or before it becomes hardened. In order to hold this anchor in position a lock 16 is pivoted on the bar 15 adjacent the free end thereof and is movable from the dotted position of Fig. 1 to the full line position which the outer edge of the lock engages, the lower opposite edge of the strip 13 thereby binding the anchor firmly but yieldingly in position since the parts are made of resilient metal.

In the form shown by Figs. 3 and i a strip 17 is formed with an end 18 adapted to enter the dovetail and with a right angled extension 19 adapted to be seated in the groove. A single locking bar 20 is formed with an end 21 adapted to cooperate with the other side of the dovetail groove 7 and this locking bar is secured by means of a pivot 22 adjacent the end 18 of the strip 17 In order to lock this bar 20 in position the strip 17 is formed or provided with a projection 23 adjacent the free end and the locking bar 20 is provided with a right angled extremity 24 by means of which the locking bar may be pressed downwardly isformed at one end with an extremity 29 cooperating with the other side of the groove 7 and at the other end with an upturned extremity 30 which may be sprung from the dotted position shown in Fig. 5to the full line position in this figure in which case the extremity will engage beneath the strip 25 and will lock the anchor firmly in the groove 7. The anchor is inserted in the groove with the locking bar in the dotted position shown in Figs. 5 and 6 and is then sprung to the full line position shown in these figures from which it can only be re moved by pringing it outwardly, as clearly shown in dotted outline in Fig. 6.

With these constructions not only is the molding held firmly in position along the edge of a step by means of the plastic material which enters the groove of themolding but also it is held by the anchors. All of the anchors have constructions which have twisted members that offer considerable resistance to the endwise movement of the parts, particularly when it is considered that the parts are firmly embedded in a hardened plastic substance, such as concrete. Although the extremities of the strips and locking bars are not slit, except in the form first described, it is obvious, of course, that they may be so slit and when 'the slit portions are bent apart they offer added resistance and form better anchors than if they are not slit.

Although this construction is particularly adapted for use in connection with steps it is obvious that it may be employed in connection with-any angular projection or may be used in any place where it is desired to anchor or hold a protecting metal strip in plastic'material. V

What I claim is:

1. The combination with an unsupported concrete step, of a metal tread for the'edge of the step having a dovetail groove into which the concrete enters, and an anchor having movable means pivoted thereto for securing it at one end in the groove and em- V V Witnesses:

bedded in the concrete and to hold the anchor in position along the tread and to fix the tread in the step.

2.'The combination with a structure of plastic material having a pro ecting edge or corner, of a metal protecting member for sald corner comprislng a groove in which the plastlc material enters before 1t hardens,

and an anchor removably inserted in the V groove with a locking member pivotally attached thereto and movable to bind itfirmly in the groove. 7

3. The combination with a structure of plastic material having aprojecting edge or corner, of a metal protecting member for said corner comprising a groove in which the plastic material enters before it hardens,

an anchor having an end adapted to be'in-V.

serted in the groove, anda locking member pivoted to the said end having a portion to engage the groove and means to releasably lock the anchor to themetal protector.

at. The combination with a structure 'of plastic material having a projecting edge or corner, of a metal protectingmember for said corner comprising a groove in which the plastic material enters before it hardens, an anchor consisting of a metal strip with an end adapted to be freely inserted and cooperating with one side of the groove, and

a locking bar pivoted to the strip adjacent the said end having an extremity to cooperate with the other side of the groove 7 and means to hold the bar in locking posif tion with respect to the strip and the groove; 5. The combination with a concrete step,

of a molding for the edge of the step with a dovetail groove at the baclrinto whichthe concrete is adapted to enter when in a plastic state, an anchorfor the molding em-v bedded in the concrete and consisting of a metal strip with the side of one end formed to cooperate withrone side of the groove, and a locking bar pivoted adjacent this end and having its adjacent end formed to cooperate and engagethe opposite side of the groove and with its other end bent so 'that it springs below the striprwhenthebar is rotated into the locking position to hold the locking bar releasably in'this position. V

In testlmony whereof Ihave signed my 7 of two subscribing witnesses,'onthistith day name to'this'specification, in the presence of January, A. D. 1915. r

' THoMAsOoLsoN,

KENT W. WONNELL; '7

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of ia'tents, Washington, D. 0. J

AcoB EBRAUN. 

